GHSA-h924-8g65-j9wg

Опубликовано: 02 дек. 2024

Источник: github

Github: Прошло ревью

CVSS4: 6.3

Описание

Traefik's X-Forwarded-Prefix Header still allows for Open Redirect

Impact

There is a vulnerability in Traefik that allows the client to provide the X-Forwarded-Prefix header from an untrusted source.

Patches

Workarounds

No workaround.

For more information

If you have any questions or comments about this advisory, please open an issue.

Original Description

### Summary The previously reported open redirect ([GHSA-6qq8-5wq3-86rp](https://github.com/traefik/traefik/security/advisories/GHSA-6qq8-5wq3-86rp)) is not fixed correctly. The safePrefix function can be tricked to return an absolute URL.

Details

The Traefik API dashboard component tries to validate that the value of the header X-Forwarded-Prefix is a site relative path:

http.Redirect(resp, req, safePrefix(req)+"/dashboard/", http.StatusFound)

func safePrefix(req *http.Request) string { prefix := req.Header.Get("X-Forwarded-Prefix") if prefix == "" { return "" } parse, err := url.Parse(prefix) if err != nil { return "" } return parse.Path }

PoC

An attacker can bypass this by sending the following payload:

curl -v 'http://traefik.localhost' -H 'X-Forwarded-Prefix: %0d//a.com' [...] > HTTP/1.1 302 Found > Location: //a.com/dashboard/

or similar:

curl -v 'http://traefik.localhost' -H 'X-Forwarded-Prefix: %2f%2fa.com' [...] > HTTP/1.1 302 Found > Location: //a.com/dashboard/

Impact

Similar to the previously reported bug. In cache poisoning scenarios this may be exploitable.

Ссылки

Пакеты

Наименование

github.com/traefik/traefik/v2

Затронутые версииВерсия исправления

< 2.11.14

2.11.14

Наименование

github.com/traefik/traefik/v3

Затронутые версииВерсия исправления

< 3.2.1

3.2.1

EPSS

Процентиль: 39%

0.00177

Низкий

6.3 Medium

CVSS4

CVE ID

CVE-2024-52003

Дефекты

CWE-601

Связанные уязвимости

CVE-2024-52003

CVSS3: 6.1

nvd

около 1 года назад

Traefik (pronounced traffic) is an HTTP reverse proxy and load balancer. There is a vulnerability in Traefik that allows the client to provide the X-Forwarded-Prefix header from an untrusted source. This issue has been addressed in versions 2.11.14 and 3.2.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CVE-2024-52003

CVSS3: 6.1

debian

около 1 года назад

Traefik (pronounced traffic) is an HTTP reverse proxy and load balance ...

EPSS

Процентиль: 39%

0.00177

Низкий

6.3 Medium

CVSS4

CVE ID

CVE-2024-52003

Дефекты

CWE-601